We led the feasibility study, design, construction and O&M for the Onondaga lake superfund project in New York, one of the most complex sediment sites ever remediated.<\/figcaption><\/figure><\/div>\n\n\nWe led the feasibility study, design, construction and O&M for the Onondaga Lake Superfund Project in New York, one of the most complex sediment sites ever remediated.<\/p>\n\n\n\n
Sediment remediation projects pose complex regulatory, financial, legal, logistical, and technical challenges \u2013 and our interdisciplinary team is ready to support from initial investigation to final remediation and site closure. By beginning every project with the end in mind, we successfully achieve client and regulatory goals efficiently and effectively.<\/p>\n\n\n\n
Our experts employ a customized total solutions approach to each project, developing and implementing closure strategies based on intelligent investigations, human health and ecotoxicology studies, and risk assessments \u2013 while maintaining the highest levels of safety and cost-effectiveness.<\/p>\n\n\n\n
Our sediment remediation and management services include:<\/p>\n\n\n\n<\/span>Characterization and Risk Assessment<\/strong> <\/span>Sediment and porewater sampling <\/li> Contaminant transport analysis and site conceptual models <\/li> Habitat and biological indicator assessments <\/li> In situ and ex situ toxicity bioassays <\/li> Fish, mollusk, and benthic invertebrate tissue and population studies <\/li> Biota community assessments for food web effects <\/li> Human health and environmental risk assessments <\/li> Fate and transport modeling and assessments <\/li> Bathymetric surveying<\/li><\/ul><\/div><\/figure>\n\n\n\n<\/span>Remedy Selection and Detailed Design<\/strong><\/strong>Remedy negotiations with regulators<\/li> Feasibility studies<\/li> Cleanup objective development and negotiation<\/li> Engineering and cost analyses of innovative technologies<\/li> Evaluation of remedy implementation risks<\/li> Dredge prism designs<\/li> Chemical isolation cap modeling and design<\/li> Evaluation of innovative sediment capping\/in situ technologies<\/li> Sediment dewatering and treatment design<\/li> Water treatment design, construction, and operation<\/li> Landfill design, construction, operation, and closure<\/li> Odor management system design<\/li> Habitat restoration<\/li><\/ul><\/div><\/figure>\n\n\n\n<\/span>Construction and Construction Management<\/strong><\/strong>World class project controls<\/li> QA\/QC, construction management, and self-performed construction<\/li> Procurement of skilled labor forces from local union halls and\/or indigenous populations<\/li> One-team effort with multiple subcontractors to manage\/self-perform construction<\/li> Odor, emissions, and water quality monitoring during construction<\/li> Closeout reporting<\/li><\/ul><\/div><\/figure>\n\n\n\n<\/span>Long-term Monitoring and Maintenance<\/strong><\/strong><\/strong>Development\/implementation of cost-effective programs for baseline\/long-term monitoring<\/li> Demonstrated efficacy of active sediment remediation\/ monitored natural recovery<\/li> Monitoring (cap performance, water quality, and contaminant concentrations)<\/li> Habitat restoration metrics<\/li><\/ul><\/div><\/figure>\n\n\n\nMany of our specialists have boots-on-the-barge investigation, design, and construction experience, providing a thorough understanding of the remediation process that leads to practical and cost-effective solutions through every phase of the project (ex. Onondaga Lake Cleanup \u2013 Syracuse, NY)<\/p>\n\n\n\n
Water Treatment And Reuse <\/h3>\n\n\n\nA Clear Choice For Water <\/h4>\n\n\n\n As a full-service partner in implementing conventional and advanced water and wastewater treatment technologies, we help solve water management challenges with innovative, custom solutions. Our mission is to help preserve water \u2013 our most critical resource \u2013 by creating and maintaining safe, efficient, and sustainable water facilities and processes. Our expertise in program and construction management (PM\/CM) and engineering have helped us transform the industry through some of the most complex water and wastewater projects in the world.<\/p>\n\n\n
\n
We designed a combined biological, physical, and chemical treatment plant for groundwater and landfill leachate at a superfund site in Virginia.<\/figcaption><\/figure><\/div>\n\n\nConventional And Advanced Technologies<\/h4>\n\n\n\n Our world-class water and wastewater services include:<\/p>\n\n\n\n